300-101.pass4sures.premium.exam.116q formatted...exam 300-101 implementing cisco ip routing version:...

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Cisco

Exam 300-101

Implementing Cisco IP Routing

Version: 10.0

Topic 1, Network Principles

Question No : 1 - (Topic 1)

A network engineer notices that transmission rates of senders of TCP traffic sharply increase and decrease simultaneously during periods of congestion. Whichcondition causes this?

A. global synchronizationB. tail dropC. random early detectionD. queue management algorithm

Answer: A


Which method allows IPv4 and IPv6 to work together without requiring both to be used for a single connection during the migration process?

A. dual-stack methodB. 6to4 tunnelingC. GRE tunnelingD. NAT-PT

Answer: A


Which three TCP enhancements can be used with TCP selective acknowledgments? (Choose three.)

A. header compressionB. explicit congestion notificationC. keepaliveD. time stampsE. TCP path discoveryF. MTU window

Answer: B,C,D


A network administrator uses IP SLA to measure UDP performance and notices that packets on one router have a higher one-way delay compared to the oppositedirection. Which UDP characteristic does this scenario describe?

A. latencyB. starvationC. connectionless communicationD. nonsequencing unordered packetsE. jitter

Answer: A


Refer to the exhibit.

A network administrator checks this adjacency table on a router. What is a possible cause for the incomplete marking?

A. incomplete ARP informationB. incorrect ACLC. dynamic routing protocol failureD. serial link congestion

Answer: A


Under which condition does UDP dominance occur?

A. when TCP traffic is in the same class as UDPB. when UDP flows are assigned a lower priority queue C. when WRED is enabledD. when ACLs are in place to block TCP traffic

Answer: A



Based on this FIB table, which statement is correct?

A Composite Solution With Just One Click - Certification Guaranteed 5A. There is no default gateway.B. The IP address of the router on FastEthernet is 209.168.201.1.C. The gateway of last resort is 192.168.201.1.D. The router will listen for all multicast traffic.

Answer: C


Which three problems result from application mixing of UDP and TCP streams within a network with no QoS? (Choose three.)

A. starvationB. jitterC. latencyD. windowingE. lower throughput

Answer: A,C,E


Which two actions must you perform to enable and use window scaling on a router? (Choose two.)

A. Execute the command ip tcp window-size 65536. B. Set window scaling to be used on the remote host.C. Execute the command ip tcp queuemax.D. Set TCP options to "enabled" on the remote host.E. Execute the command ip tcp adjust-mss.

Answer: A,B


Which switching method is used when entries are present in the output of the command show ip cache?

A Composite Solution With Just One Click - Certification Guaranteed 6

A. fast switchingB. process switchingC. Cisco Express Forwarding switchingD. cut-through packet switching

Answer: A


A network administrator executes the command clear ip route. Which two tables does this command clear and rebuild? (Choose two.)

A. IP routingB. FIBC. ARP cacheD. MAC address tableE. Cisco Express Forwarding tableF. topology table

Answer: A,B


Which statement about the use of tunneling to migrate to IPv6 is true?

A. Tunneling is less secure than dual stack or translation. B. Tunneling is more difficult to configure than dual stack or translation. C. Tunneling does not enableusers of the new protocol to communicate with users of the old protocol without dual-stack hosts.

D. Tunneling destinations are manually determined by the IPv4 address in the low-order 32 bits of IPv4-compatible IPv6 addresses.

Answer: C

Topic 2, Layer 2 Technologies



Which statement is true about the PPP Session Phase of PPPoE?

A. PPP options are negotiated and authentication is not performed. Once the link setup is completed, PPPoE functions as a Layer 3 encapsulation method thatallows data to be transferred over the PPP link within PPPoE headers. B. PPP options are not negotiated and authentication is performed. Once the link setup iscompleted, PPPoE functions as a Layer 4 encapsulation method that allows data to be transferred over the PPP link within PPPoE headers. C. PPP options areautomatically enabled and authorization is performed. Once the link setup is completed, PPPoE functions as a Layer 2 encapsulation method that allows data to beencrypted over the PPP link within PPPoE headers. D. PPP options are negotiated and authentication is performed. Once the link setup is completed, PPPoEfunctions as a Layer 2 encapsulation method that allows data to be transferred over the PPP link within PPPoE headers.

Answer: D


Which protocol uses dynamic address mapping to request the next-hop protocol address for a specific connection?

A. Frame Relay inverse ARPB. static DLCI mappingC. Frame Relay broadcast queueD. dynamic DLCI mapping

Answer: A


PPPoE is composed of which two phases?

A. Active Authentication Phase and PPP Session Phase B. Passive Discovery Phase and PPP Session Phase C. Active Authorization Phase and PPP SessionPhase D. Active Discovery Phase and PPP Session Phase

Answer: D


A network engineer has been asked to ensure that the PPPoE connection is established and authenticated using an encrypted password. Which technology, incombination with PPPoE, can be used for authentication in this manner?

A. PAPB. dot1xC. IPsecD. CHAPE. ESP

Answer: D



A corporate policy requires PPPoE to be enabled and to maintain a connection with the ISP, even if no interesting traffic exists. Which feature can be used toaccomplish this task?

A. TCP AdjustB. Dialer PersistentC. PPPoE GroupsD. half-bridgingE. Peer Neighbor Route

Answer: B


Which PPP authentication method sends authentication information in clear text?

A. MS CHAPB. CDPCPC. CHAPD. PAPAnswer: D


Prior to enabling PPPoE in a virtual private dialup network group, which task must be completed?

A. Disable CDP on the interface.B. Execute the vpdn enable command.C. Execute the no switchport command.D. Enable QoS FIFO for PPPoE support.

Answer: B

Topic 3, Layer 3 Technologies


You have been asked to evaluate how EIGRP is functioning in a customer network.


Which key chain is being used for authentication of EIGRP adjacency between R4 and R2?

A. CISCOB. EIGRPC. keyD. MD5

Answer: A

Explanation: R4 and R2 configs are as shown below:

Clearly we see the actual key chain is named CISCO.


Which prefix is matched by the command ip prefix-list name permit 10.8.0.0/16 ge 24 le 24?

A. 10.9.1.0/24B. 10.8.0.0/24C. 10.8.0.0/16D. 10.8.0.0/23

Answer: B



Which one statement is true?

A. Traffic from the 172.16.0.0/16 network will be blocked by the ACL. B. The 10.0.0.0/8 network will not be advertised by Router B because the network statementfor the 10.0.0.0/8 network is missing from Router B. C. The 10.0.0.0/8 network will not be in the routing table on Router B. D. Users on the 10.0.0.0/8 network cansuccessfully ping users on the 192.168.5.0/24 network, but users on the 192.168.5.0/24 cannot successfully ping users on the 10.0.0.0/8 network.E. Router B will not advertise the 10.0.0.0/8 network because it is blocked by the ACL.

Answer: E


After you review the output of the command show ipv6 interface brief, you see that several IPv6 addresses have the 16-bit hexadecimal value of "FFFE" insertedinto the address. Based on this information, what do you conclude about these IPv6 addresses?

A. IEEE EUI-64 was implemented when assigning IPv6 addresses on the device. B. The addresses were misconfigured and will not function as intended. C. IPv6addresses containing "FFFE" indicate that the address is reserved for multicast. D. The IPv6 universal/local flag (bit 7) was flipped. E. IPv6 unicast forwarding wasenabled, but IPv6 Cisco Express Forwarding was disabled.

Answer: A



What is the advertised distance for the 192.168.46.0 network on R1?

A. 333056B. 1938688C. 1810944D. 307456

Answer: C


Scenario:

You have been asked to evaluate an OSPF network setup in a test lab and to answer questions a customer has about its operation. The customer has disabledyour access to the show running-config command.

How many times was SPF algorithm executed on R4 for Area 1?

A. 1B. 5C. 9D. 20E. 54F. 224

Answer: C




Traffic from R1 to R61 s Loopback address is load shared between R1-R2-R4-R6 and R1- R3-R5-R6 paths. What is the ratio of traffic over each path?

A. 1:1B. 1:5C. 6:8D. 19:80

Answer: D



Which command only announces the 1.2.3.0/24 network out of FastEthernet 0/0?

A. distribute list 1 outB. distribute list 1 out FastEthernet0/0C. distribute list 2 outD. distribute list 2 out FastEthernet0/0

Answer: D


Scenario:


Areas of Router 5 and 6 are not normal areas, inspect their routing tables and determine which statement is true?

A. R5's Loopback and R6's Loopback are both present in R5's Routing table B. R5's Loopback and R6's Loopback are both present in R6's Routing table C. Only R5's loopback is present in R5's Routing tableD. Only R6's loopback is present in R5's Routing table E. Only R5's loopback is present in R6's Routing table

Answer: A

Question No : 29 CORRECT TEXT - (Topic 3)

You are a network engineer with ROUTE.com, a small IT company. ROUTE.com has two connections to the Internet; one via a frame relay link and one via anEoMPLS link. IT policy requires that all outbound HTTP traffic use the frame relay link when it is available. All other traffic may use either link. No static or defaultrouting is allowed.

Choose and configure the appropriate path selection feature to accomplish this task. You may use the Test Workstation to generate HTTP traffic to validate yoursolution.


Answer: We need to configure policy based routing to send specific traffic along a path that is different from the best path in the routing table.Here are the step by Step Solution for this:1) First create the access list that catches the HTTP traffic:R1(config)#access-list 101 permit tcp any any eq www2) Configure the route map that sets the next hop address to be ISP1 and permits the rest of the traffic:R1(config)#route-map pbr permit 10R1(config-route-map)#match ip address 101R1(config-route-map)#set ip next-hop 10.1.100.2R1(config-route-map)#exitR1(config)#route-map pbr permit 203) Apply the route-map on the interface to the server in the EIGRP Network:R1(config-route-map)#exitR1(config)#int fa0/1R1(config-if)#ip policy route-map pbr

R1(config-if)#exitR1(config)#exit


JS Industries has expanded their business with the addition of their first remote office. The remote office router (R3) was previously configured and all corporatesubnets were reachable from R3. JS Industries is interested in using route summarization along with the EIGRP Stub Routing feature to increase network stabilitywhile reducing the memory usage and bandwidth utilization to R3. Another network professional was tasked with implementing this solution. However, in theprocess of configuring EIGRP stub routing connectivity with the remote network devices off of R3 has been lost.

Currently EIGRP is configured on all routers R2, R3, and R4 in the network. Your task is to identify and resolve the cause of connectivity failure with the remoteoffice router R3. Once the issue has been resolved you should complete the task by configuring route summarization only to the remote office router R3.

You have corrected the fault when pings from R2 to the R3 LAN interface are successful, and the R3 IP routing table only contains 2 10.0.0.0 subnets.

Answer: Here are the solution as below:


What is the purpose of the autonomous-system {autonomous-system-number} command?

A. It sets the EIGRP autonomous system number in a VRF. B. It sets the BGP autonomous system number in a VRF. C. It sets the global EIGRP autonomoussystem number. D. It sets the global BGP autonomous system number.

Answer: A


Route.com is a small IT corporation that is attempting to implement the network shown in the exhibit. Currently the implementation is partially completed. OSPF has

been configured on routers Chicago and NewYork. The SO/O interface on Chicago and the SO/1 interface on NewYork are in Area 0. The loopbackO interface onNewYork is in Area 1. However, they cannot ping from the serial interface of the Seattle router to the loopback interface of

the NewYork router. You have been asked to complete the implementation to allow this ping.

ROUTE.com's corporate implementation guidelines require:

· The OSPF process ID for all routers must be 10.

· The routing protocol for each interface must be enabled under the routing process.

· The routing protocol must be enabled for each interface using the most specific wildcard mask possible.

·The serial link between Seattle and Chicago must be in OSPF area 21.

·OSPF area 21 must not receive any inter-area or external routes.

Network Information

Seattle

S0/0 192.168.16.5/30 - Link between Seattle and Chicago

Secret Password: cisco

Chicago

S0/0 192.168.54.9/30 - Link between Chicago and NewYork

S0/1 192.168.16.6/30 - Link between Seattle and Chicago Secre

Password: cisco

NewYork

S0/1 192.168.54.10/30 - Link between Chicago and NewYork

Loopback0 172.16.189.189

Secret Password: cisco

Answer: Here is the solution below:



What percent of R1's interfaces bandwidth is EIGRP allowed to use?

A. 10B. 20C. 30D. 40

Answer: B

What type of route filtering is occurring on R6

A. Distribute-list using an ACLB. Distribute-list using a prefix-listC. Distribute-list using a route-mapD. An ACL using a distance of 255

Answer: A


A router with an interface that is configured with ipv6 address autoconfig also has a link- local address assigned. Which message is required to obtain a globalunicast address when a router is present?

A. DHCPv6 requestB. router-advertisementC. neighbor-solicitationD. redirect

Answer: B


ROUTE.com is a small IT corporation that has an existing enterprise network that is running IPv6 0SPFv3. Currently OSPF is configured on all routers. However,R4's loopback address (FEC0:4:4) cannot be seen in R1's IPv6 routing table. You are tasked with identifying the cause of this fault and implementing the neededcorrective actions that uses OPSF features and does not change the current area assignments. You will know that you have corrected the fault when R4's loopbackaddress (FEC0:4:4) can be seen in RTs IPv6 routing table.

Special Note: To gain the maximum number of points you must remove all incorrect or unneeded configuration statements related to this issue.

Answer: Here is the solution below:


Router A and Router B are configured with IPv6 addressing and basic routing capabilities using OSPFv3. The networks that are advertised from Router A do notshow up in Router B's routing table. After debugging IPv6 packets, the message "not a router" is found in the output. Why is the routing information not beinglearned by Router B?

A. OSPFv3 timers were adjusted for fast convergence. B. The networks were not advertised properly under the OSPFv3 process. C. An IPv6 traffic filter is blockingthe networks from being learned via the Router B interface that is connected to Router A.D. IPv6 unicast routing is not enabled on Router A or Router B.

Answer: D


For security purposes, an IPv6 traffic filter was configured under various interfaces on the local router. However, shortly after implementing the traffic filter, OSPFv3neighbor adjacencies were lost. What caused this issue?

A. The traffic filter is blocking all ICMPv6 traffic. B. The global anycast address must be added to the traffic filter to allow OSPFv3 to work properly.C. The link-local addresses that were used by OSPFv3 were explicitly denied, which caused the neighbor relationships to fail.D. IPv6 traffic filtering can be implemented only on SVIs.

Answer: C


What is the default OSPF hello interval on a Frame Relay point-to-point network?

A. 10B. 20C. 30D. 40

Answer: A


A packet capture log indicates that several router solicitation messages were sent from a local host on the IPv6 segment. What is the expected acknowledgmentand its usage?

A. Router acknowledgment messages will be forwarded upstream, where the DHCP server will allocate addresses to the local host.B. Routers on the IPv6 segment will respond with an advertisement that provides an external path from the local subnet, as well as certain data, such as prefixdiscovery. C. Duplicate Address Detection will determine if any other local host is using the same IPv6 address for communication with the IPv6 routers on thesegment. D. All local host traffic will be redirected to the router with the lowest ICMPv6 signature, which is statically defined by the network administrator.

Answer: B


You are a network engineer with ROUTE.com, a small IT company. They have recently merged two organizations and now need to merge their networks as shownin the topology exhibit. One network is using OSPF as its IGP and the other is using EIGRP as its IGP. R4 has been added to the existing OSPF network to providethe interconnect between the OSPF and EIGRP networks. Two links have been added that will provide redundancy.

The network requirements state that you must be able to ping and telnet from loopback 101 on R1 to the OPSF domain test address of 172.16.1.100. All trafficmust use the shortest path that provides the greatest bandwidth. The redundant paths from the OSPF network to the EIGRP network must be available in case of a

link failure. No static or default routing is allowed in either network.

A previous network engineer has started the merger implementation and has successfully assigned and verified all IP addressing and basic IGP routing. You havebeen tasked with completing the implementation and ensuring that the network requirements are met. You may not remove or change any of the configurationcommands currently on any of the routers. You may add new commands or change default values.

Answer: First we need to find out 5 parameters (Bandwidth, Delay, Reliability, Load, MTU) of the s0/0/0 interface (the interface of R2 connected to R4) for

redistribution:R2#show interface s0/0/0Write down these 5 parameters, notice that we have to divide the Delay by 10 because the metric unit is in tens of microsecond. For example, we getBandwidth=1544 Kbit, Delay=20000 us, Reliability=255, Load=1, MTU=1500 bytes then we would redistribute as follows:R2#config terminalR2(config)# router ospf 1R2(config-router)# redistribute eigrp 100 metric-type 1 subnets R2(config-router)#exitR2(config-router)#router eigrp 100R2(config-router)#redistribute ospf 1 metric 1544 2000 255 1 1500 Note: In fact, these parameters are just used for reference and we can use other parameterswith no problem.If the delay is 20000us then we need to divide it by 10, that is 20000 / 10 = 2000) For R3 we use the show interface fa0/0 to get 5 parameters too R3#show interfacefa0/0For example we get Bandwidth=10000 Kbit, Delay=1000 us, Reliability=255, Load=1, MTU=1500 bytesR3#config terminalR3(config)#router ospf 1R3(config-router)#redistribute eigrp 100 metric-type 1 subnets R3(config)#exitR3(config-router)#router eigrp 100R3(config-router)#redistribute ospf 1 metric 10000 100 255 1 1500

Finally you should try to "show ip route" to see the 172.16.100.1 network (the network behind R4) in the routing table of R1 and make a ping from R1 to thisnetwork. Note: If the link between R2 and R3 is FastEthernet link, we must put the command below under EIGRP process to make traffic from R1 to go through R3(R1 -> R2 -> R3 -> R4), which is better than R1 -> R2 -> R4.R2(config-router)# distance eigrp 90 105This command sets the Administrative Distance of all EIGRP internal routes to 90 and all EIGRP external routes to 105, which is smaller than the AdministrativeDistance of OSPF (110) -> the link between R2 & R3 will be preferred to the serial link between R2 & R4. Note: The actual OPSF and EIGRP process numbers maychange in the actual exam so be sure to use the actual correct values, but the overall solution is the same.


Scenario:


Which of the following statements is true about the serial links that terminate in R3

A. The R1-R3 link needs the neighbor command for the adjacency to stay up B. The R2-R3 link OSPF timer values are 30, 120, 120 C. The R1-R3 link OSPF timervalues should be 10,40,40 D. R3 is responsible for flooding LSUs to all the routers on the network.

Answer: B


An engineer has configured a router to use EUI-64, and was asked to document the IPv6 address of the router. The router has the following interface parameters:

mac address C601.420F.0007

subnet 2001:DB8:0:1::/64

Which IPv6 addresses should the engineer add to the documentation?

A. 2001:DB8:0:1:C601:42FF:FE0F:7B. 2001:DB8:0:1:FFFF:C601:420F:7C. 2001:DB8:0:1:FE80:C601:420F:7D. 2001:DB8:0:1:C601:42FE:800F:7

Answer: A


Scenario:


How old is the Type 4 LSA from Router 3 for area 1 on the router R5 based on the output you have examined?

A. 1858B. 1601C. 600D. 1569

Answer: A

Topic 4, VPN Technologies


A network engineer executes the show crypto ipsec sa command. Which three pieces of information are displayed in the output? (Choose three.)

A. inbound crypto mapB. remaining key lifetimeC. path MTUD. tagged packetsE. untagged packetsF. invalid identity packets

Answer: A,B,C


Which encapsulation supports an interface that is configured for an EVN trunk?

A. 802.1QB. ISLC. PPPD. Frame RelayE. MPLSF. HDLC

Answer: A


Which Cisco IOS VPN technology leverages IPsec, mGRE, dynamic routing protocol, NHRP, and Cisco Express Forwarding?

A. FlexVPNB. DMVPNC. GETVPND. Cisco Easy VPN

Answer: B


Which common issue causes intermittent DMVPN tunnel flaps?

A. a routing neighbor reachability issueB. a suboptimal routing tableC. interface bandwidth congestionD. that the GRE tunnel to hub router is not encrypted

Answer: A


A company has just opened two remote branch offices that need to be connected to the corporate network. Which interface configuration output can be applied tothe corporate router to allow communication to the remote sites?

A. interface Tunnel0bandwidth 1536ip address 209.165.200.230 255.255.255.224tunnel source Serial0/0tunnel mode gre multipointB. interface fa0/0bandwidth 1536ip address 209.165.200.230 255.255.255.224tunnel mode gre multipointC. interface Tunnel0bandwidth 1536ip address 209.165.200.231 255.255.255.224tunnel source 209.165.201.1tunnel-mode dynamicD. interface fa 0/0bandwidth 1536ip address 209.165.200.231 255.255.255.224tunnel source 192.168.161.2tunnel destination 209.165.201.1tunnel-mode dynamic

Answer: A


A user is having issues accessing file shares on a network. The network engineer advises the user to open a web browser, input a prescribed IP address, andfollow the instructions. After doing this, the user is able to access company shares. Which type of remote access did the engineer enable?

A. EZVPNB. IPsec VPN client accessC. VPDN client accessD. SSL VPN client access

Answer: D


Refer to the following output:

Router#show ip nhrp detail

10.1.1.2/8 via 10.2.1.2, Tunnel1 created 00:00:12, expire 01:59:47

TypE. dynamic, Flags: authoritative unique nat registered used

NBMA address: 10.12.1.2

What does the authoritative flag mean in regards to the NHRP information?

A. It was obtained directly from the next-hop server. B. Data packets are process switches for this mapping entry. C. NHRP mapping is for networks that are local tothis router. D. The mapping entry was created in response to an NHRP registration request. E. The NHRP mapping entry cannot be overwritten.

Answer: A


Which three characteristics are shared by subinterfaces and associated EVNs? (Choose three.)

A. IP addressB. routing tableC. forwarding tableD. access control listsE. NetFlow configuration

Answer: A,B,C

Topic 5, Infrastructure Security


Which traffic does the following configuration allow?

ipv6 access-list cisco

permit ipv6 host 2001:DB8:0:4::32 any eq ssh

line vty 0 4

ipv6 access-class cisco in

A. all traffic to vty 0 4 from source 2001:DB8:0:4::32 B. only ssh traffic to vty 0 4 from source allC. only ssh traffic to vty 0 4 from source 2001:DB8:0:4::32 D. all traffic to vty 0 4 from source all

Answer: C


What are the three modes of Unicast Reverse Path Forwarding?

A. strict mode, loose mode, and VRF modeB. strict mode, loose mode, and broadcast modeC. strict mode, broadcast mode, and VRF modeD. broadcast mode, loose mode, and VRF mode

Answer: A


Refer to the following command:

router(config)# ip http secure-port 4433

Which statement is true?

A. The router will listen on port 4433 for HTTPS traffic. B. The router will listen on port 4433 for HTTP traffic. C. The router will never accept any HTTP and HTTPStraffic. D. The router will listen to HTTP and HTTP traffic on port 4433.

Answer: A


What does the following access list, which is applied on the external interface FastEthernet 1/0 of the perimeter router, accomplish?

router(config)#access-list 101 deny ip 10.0.0.0 0.255.255.255 any log

router (config)#access-list 101 deny ip 192.168.0.0 0.0.255.255 any log

router (config)#access-list 101 deny ip 172.16.0.0 0.15.255.255 any log

router (config)#access-list 101 permit ip any any

router (config)#interface fastEthernet 1/0

router (config-if)#ip access-group 101 in

A. It prevents incoming traffic from IP address ranges 10.0.0.0-10.0.0.255, 172.16.0.0- 172.31.255.255, 192.168.0.0-192.168.255.255 and logs any intrusionattempts. B. It prevents the internal network from being used in spoofed denial of service attacks and logs any exit to the Internet.C. It filters incoming traffic from private addresses in order to prevent spoofing and logs any intrusion attempts.D. It prevents private internal addresses to be accessed directly from outside.

Answer: C


Refer to the following access list.

access-list 100 permit ip any any log

After applying the access list on a Cisco router, the network engineer notices that the router CPU utilization has risen to 99 percent. What is the reason for this?

A. A packet that matches access-list with the "log" keyword is Cisco Express Forwarding switched.B. A packet that matches access-list with the "log" keyword is fast switched. C. A packet that matches access-list with the "log" keyword is process switched. D. Alarge amount of IP traffic is being permitted on the router.

Answer: C


For troubleshooting purposes, which method can you use in combination with the "debug ip packet" command to limit the amount of output data?

A. You can disable the IP route cache globally.B. You can use the KRON scheduler.C. You can use an extended access list.D. You can use an IOS parser.

E. You can use the RITE traffic exporter.

Answer: C


A network engineer is configuring a routed interface to forward broadcasts of UDP 69, 53, and 49 to 172.20.14.225. Which command should be applied to theconfiguration to allow this?

A. router(config-if)#ip helper-address 172.20.14.225 B. router(config-if)#udp helper-address 172.20.14.225 C. router(config-if)#ip udp helper-address 172.20.14.225D. router(config-if)#ip helper-address 172.20.14.225 69 53 49

Answer: A


Which address is used by the Unicast Reverse Path Forwarding protocol to validate a packet against the routing table?

A. source addressB. destination addressC. router interfaceD. default gateway

Answer: A

Topic 6, Infrastructure Services


IPv6 has just been deployed to all of the hosts within a network, but not to the servers. Which feature allows IPv6 devices to communicate with IPv4 servers?

A. NATB. NATngC. NAT64D. dual-stack NATE. DNS64

Answer: C


A network engineer is configuring SNMP on network devices to utilize one-way SNMP notifications. However, the engineer is not concerned with authentication orencryption. Which command satisfies the requirements of this scenario?

A. router(config)#snmp-server host 172.16.201.28 traps version 2c CISCORO B. router(config)#snmp-server host 172.16.201.28 informs version 2c CISCORO C.router(config)#snmp-server host 172.16.201.28 traps version 3 auth CISCORO D. router(config)#snmp-server host 172.16.201.28 informs version 3 authCISCORO

Answer: A



Which statement about the output of the show flow-sampler command is true?

A. The sampler matched 10 packets, each packet randomly chosen from every group of 100 packets.B. The sampler matched 10 packets, one packet every 100 packets. C. The sampler matched 10 packets, each one randomly chosen from every 100-secondinterval.D. The sampler matched 10 packets, one packet every 100 seconds.

Answer: A


A network engineer is asked to configure a "site-to-site" IPsec VPN tunnel. One of the last things that the engineer does is to configure an access list (access-list 1permit any) along with the command ip nat inside source list 1 int s0/0 overload. Which functions do the two commands serve in this scenario?

A. The command access-list 1 defines interesting traffic that is allowed through the tunnel. B. The command ip nat inside source list 1 int s0/0 overload disables"many-to-one" access for all devices on a defined segment to share a single IP address upon exiting the external interface.C. The command access-list 1 permit any defines only one machine that is allowed through the tunnel.D. The command ip nat inside source list 1 int s0/0 overload provides "many-to-one" access for all devices on a defined segment to share a single IP address uponexiting the external interface.

Answer: D


A network engineer executes the "ipv6 flowset" command. What is the result?

A. Flow-label marking in 1280-byte or larger packets is enabled. B. Flow-set marking in 1280-byte or larger packets is enabled.C. IPv6 PMTU is enabled on the router.D. IPv6 flow control is enabled on the router.

Answer: A


A company's corporate policy has been updated to require that stateless, 1-to-1, and IPv6 to IPv6 translations at the Internet edge are performed. What is the bestsolution to ensure compliance with this new policy?

A. NAT64B. NAT44C. NATv6D. NPTv4E. NPTv6

Answer: E


An organization decides to implement NetFlow on its network to monitor the fluctuation of traffic that is disrupting core services. After reviewing the output ofNetFlow, the network engineer is unable to see OUT traffic on the interfaces. What can you determine based on this information?

A. Cisco Express Forwarding has not been configured globally.B. NetFlow output has been filtered by default.C. Flow Export version 9 is in use.D. The command ip flow-capture fragment-offset has been enabled.

Answer: A


A network engineer is notified that several employees are experiencing network performance related issues, and bandwidth-intensive applications are identified asthe root cause. In order to identify which specific type of traffic is causing this slowness, information such as the source/destination IP and Layer 4 port numbers isrequired. Which feature should the engineer use to gather the required information?

A. SNMPB. Cisco IOS EEM

C. NetFlowD. SyslogE. WCCP

Answer: C


What is a function of NPTv6?

A. It interferes with encryption of the full IP payload.B. It maintains a per-node state.C. It is checksum-neutral.D. It rewrites transport layer headers.

Answer: C


A network engineer finds that a core router has crashed without warning. In this situation, which feature can the engineer use to create a crash collection?

A. secure copy protocolB. core dumpsC. warm reloadsD. SNMPE. NetFlow

Answer: B


Which two functions are completely independent when implementing NAT64 over NAT-PT? (Choose two.)

A. DNSB. NATC. port redirectionD. stateless translationE. session handling

Answer: A,B


After a recent DoS attack on a network, senior management asks you to implement better logging functionality on all IOS-based devices. Which two actions canyou take to provide enhanced logging results? (Choose two.)

A. Use the msec option to enable service time stamps.B. Increase the logging history.C. Set the logging severity level to 1.D. Specify a logging rate limit.E. Disable event logging on all noncritical items.

Answer: A,B


Which two methods of deployment can you use when implementing NAT64? (Choose two.)

A. statelessB. statefulC. manualD. automaticE. staticF. functionalG. dynamic

Answer: A,B


Which type of traffic does DHCP snooping drop?

A. discover messagesB. DHCP messages where the source MAC and client MAC do not match C. traffic from a trusted DHCP server to clientD. DHCP messages where the destination MAC and client MAC do not match

Answer: B


A network engineer is configuring a solution to allow failover of HSRP nodes during maintenance windows, as an alternative to powering down the active router andletting thenetwork respond accordingly. Which action will allow for manual switching of HSRP nodes?

A. Track the up/down state of a loopback interface and shut down this interface during maintenance.B. Adjust the HSRP priority without the use of preemption. C. Disable and enable all active interfaces on the active HSRP node. D. Enable HSRPv2 under globalconfiguration, which allows for maintenance mode.

Answer: A


A network engineer initiates the ip sla responder tcp-connect command in order to gather statistics for performance gauging. Which type of statistics does theengineer see?

A. connectionless-orientedB. service-orientedC. connection-orientedD. application-oriented

Answer: C


When using SNMPv3 with NoAuthNoPriv, which string is matched for authentication?

A. usernameB. passwordC. community-stringD. encryption-key

Answer: A


A network engineer is trying to implement broadcast-based NTP in a network and executes the ntp broadcast client command. Assuming that an NTP server isalready set up, what is the result of the command?

A. It enables receiving NTP broadcasts on the interface where the command was executed.B. It enables receiving NTP broadcasts on all interfaces globally. C. It enables a device to be an NTP peer to another device. D. It enables a device to receive NTPbroadcast and unicast packets.

Answer: A


What is the result of the command ip flow-export destination 10.10.10.1 5858?

A. It configures the router to export cache flow information to IP 10.10.10.1 on port UDP/5858.B. It configures the router to export cache flow information about flows with destination IP 10.10.10.1 and port UDP/5858.C. It configures the router to receive cache flow information from IP 10.10.10.1 on port UDP/5858.D. It configures the router to receive cache flow information about flows with destination IP 10.10.10.1 and port UDP/5858.

Answer: A


Which NetFlow component is applied to an interface and collects information about flows?

A. flow monitorB. flow exporterC. flow samplerD. flow collector

Answer: A


A network engineer executes the show ip flow export command. Which line in the output indicates that the send queue is full and export packets are not being sent?

A. output dropsB. enqueuing for the RPC. fragmentation failuresD. adjacency issues

Answer: A


A network engineer has left a NetFlow capture enabled over the weekend to gather information regarding excessive bandwidth utilization. The following command isentered:

switch#show flow exporter Flow_Exporter-1

What is the expected output?

A. configuration of the specified flow exporter

B. current status of the specified flow exporter C. status and statistics of the specified flow monitor D. configuration of the specified flow monitor

Answer: B

Topic 7, Mix Questions


Which statement about dual stack is true?

A. Dual stack translates IPv6 addresses to IPv4 addresses. B. Dual stack means that devices are able to run IPv4 and IPv6 in parallel. C. Dual stack translates IPv4addresses to IPv6 addresses. D. Dual stack changes the IP addresses on hosts from IPv4 to IPv6 automatically.

Answer: B


A network administrator is troubleshooting a DMVPN setup between the hub and the spoke. Which action should the administrator take before troubleshooting theIPsec configuration?

A. Verify the GRE tunnels.B. Verify ISAKMP.C. Verify NHRP.D. Verify crypto maps.

Answer: A


Which type of BGP AS number is 64591?

A. a private AS numberB. a public AS numberC. a private 4-byte AS numberD. a public 4-byte AS number

Answer: A


A network engineer is investigating the cause of a service disruption on a network segment and executes the debug condition interface fastethernet f0/0 command.In which situation is the debugging output generated?

A. when packets on the interface are received and the interface is operational B. when packets on the interface are received and logging buffered is enabled C.when packets on the interface are received and forwarded to a configured syslog server D. when packets on the interface are received and the interface is shutdown

Answer: A


What is the primary service that is provided when you implement Cisco Easy Virtual Network?

A. It requires and enhances the use of VRF-Lite. B. It reduces the need for common services separation. C. It allows for traffic separation and improved networkefficiency. D. It introduces multi-VRF and label-prone network segmentation.

Answer: C


Which Cisco VPN technology uses AAA to implement group policies and authorization and is also used for the XAUTH authentication method?

A. DMVPNB. Cisco Easy VPNC. GETVPND. GREVPN

Answer: B


Refer to the following configuration command.

router (config-line)# ntp master 10

Which statement about this command is true?

A. The router acts as an authoritative NTP clock and allows only 10 NTP client connections.B. The router acts as an authoritative NTP clock at stratum 10.C. The router acts as an authoritative NTP clock with a priority number of 10.D. The router acts as an authoritative NTP clock for 10 minutes only.

Answer: B


Which two commands would be used to troubleshoot high memory usage for a process? (Choose two.)

A. router#show memory allocating-process tableB. router#show memory summaryC. router#show memory deadD. router#show memory eventsE. router#show memory processor statistics

Answer: A,B


Which three benefits does the Cisco Easy Virtual Network provide to an enterprise network? (Choose three.)

A. simplified Layer 3 network virtualizationB. improved shared services supportC. enhanced management, troubleshooting, and usability D. reduced configuration and deployment time for dot1q trunking E. increased network performance andthroughputF. decreased BGP neighbor configurations

Answer: A,B,C


Refer to the exhibit. After configuring GRE between two routers running OSPF that are connected to each other via a WAN link, a network engineer notices that thetwo routers cannot establish the GRE tunnel to begin the exchange of routing updates. What is the reason for this?

A. Either a firewall between the two routers or an ACL on the router is blocking IP protocol number 47.B. Either a firewall between the two routers or an ACL on the router is blocking UDP 57.C. Either a firewall between the two routers or an ACL on the router is blocking TCP 47.

Answer: A


Which IPv6 address type is seen as the next-hop address in the output of the show ipv6 rip RIPng database command?

A. link-localB. globalC. site-localD. anycastE. multicast

Answer: A


A router receives a routing advertisement for the same prefix and subnet from four different routing protocols. Which advertisement is installed in the routing table?

A. RIPB. OSPFC. iBGPD. EIGRP

Answer: D


Refer to the exhibit. Which statement about the configuration is true?

A. 20 packets are being sent every 30 seconds.B. The monitor starts at 12:05:00 a.m.C. Jitter is being tested with TCP packets to port 65051.D. The packets that are being sent use DSCP EF.

Answer: A


To configure SNMPv3 implementation, a network engineer is using the AuthNoPriv security level. What effect does this action have on the SNMP messages?

A. They become unauthenticated and unencrypted.B. They become authenticated and unencrypted.C. They become authenticated and encrypted.D. They become unauthenticated and encrypted.

Answer: B


Which three items can you track when you use two time stamps with IP SLAs? (Choose three.)

A. delayB. jitterC. packet lossD. loadE. throughputF. path

Answer: A,B,C


Refer to the exhibit. The network setup is running the RIP routing protocol. Which two events will occur following link failure between R2 and R3? (Choose two.)

A. R2 will advertise network 192.168.2.0/27 with a hop count of 16 to R1. B. R2 will not send any advertisements and will remove route 192.168.2.0/27 from itsrouting table.C. R1 will reply to R2 with the advertisement for network 192.168.2.0/27 with a hop count of 16.D. After communication fails and after the hold-down timer expires, R1 will remove the 192.168.2.0/27 route from its routing table.E. R3 will not accept any further updates from R2, due to the split-horizon loop prevention mechanism.

Answer: A,C


Which parameter in an SNMPv3 configuration offers authentication and encryption?

A. authB. noauthC. privD. secret

Answer: C


Exam A

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